Bench-vise.



A. L. BEMIS. BENCH VISB.

APPLIGATION FILED MAY 2, 1908.

1,O34,568 Patented Aug. 6,1912.

Fig-Z.

14 2 Zn eases ALBERT L. BEIVIIS, OF WORCESTER, MASSACHUSETTS.

BENCH-VISE.

Specification of Letters Patent.

Application filed May 2, 1908.

Patented Aug. 6, 1912. Serial No. 430,428.

To all whom it may concern:

Be it known that I, ALBERT L. BEMIS, a citizen of the United States, residing at Worcester, in the county of Worcester and Commonwealth of Massachusetts, have in vented a new and useful Improvement in Bench-Vises, of which the following is a specification, accompanied by drawings forming a part of the same,in which- Figure l is a side View of my improved bench vise. Fig. 2 is an end view of the same, and Fig. 3 is a section on line 3-3, Fig. 2, with the slide removed.

Similar reference figures refer to similar parts in the different views.

My invention relates to bench Vises in which the movable jaw is reciprocated by rotation of a screw in a" nut held in a stationary lug, and it consists in the construction and arrangement of parts as hereinafter described and pointed out in the annexed claims.

Referring to the accompanying drawings 1 denotes a bench with its end 2, in the present instance, forming the stationaryj aw of the vise. A movable jaw 3 is arranged to cooperate with the jaw 2, and is attached to a plate 4, preferably integral with the jaw 3 at right angles thereto, and arranged to slide in longitudinal ways 5 in a plate 6, attached to the under side of the bench 1, and having a depending lug 7, containing openings 8 and 9, and recesses or pockets 10, 10, communicating with the openings 8 and 9. A rotatable screw 11, having a neck 12, which is engaged by the movable jaw 3, passes through the openings 8 and 9 and engages a nut 13, which is provided with cars 14, 14, entering the recesses 10, 10, by which the nut 13 is held from rotation and also from longitudinal movement. The opening 9 is of sufficient vertical dimension to allow the insertion and removal of the nut 13 through said opening 9 when the nut 13 is turned to bring the ears 14, 14 into a vertical position; but, as shown in Fig. 3, the insertion of the plate 4- prevents such turning of the nut. When the plate 4 is in position, therefore, the nut 13 cannot be sufiiciently turned to pass through the opening 9, but the removal of the plate 4 allows the endwise removal of the nut through said opening. Sufficient play is allowed the nut 13 in the recesses 10, 10 to enable it to aline itself with the screw 11. The screw 11 is provided with the usual handle 15, by which the screw is rotated, and the movable jaw 3 and plate 4 moved along the ways 5.

It has been customary to secure the nut, designed to be engaged by the rotating screw, from movement, and this method of construction necessitates a careful adjustment of the nut to bring its axis into the proper relation with the line of movement of the sliding parts of the movable jaw and with the ways 5. By my improvement, however, no such adjustment is necessary, as by leaving the ears 14: of the nut 13 unsecured in the recesses 10, 10, and by making the dimensions of the recesses 10 slightly in excess of the dimensions of the ears 1 1, I provide an opportunity for self adjustment of the nut 13 to bring its axis into correspondence with the axis of the screw 11. The nut 13 is thereby enabled to mo e either longitudinally or transversely in order to bring its axis coincident with the axis of the screw 11, and the proper adjustment is thereby automatically secured. The sides of the recesses 10, 10, are arranged to prevent undue movement of the nut 13, so that the operation of the vise itself is not interfered with.

I claim,

1. In a bench vise, the combination with a fixed plate attached to the under side of the bench, of a lug depending from said fixed plate and having an opening therethrough said lug also having recesses or pockets transverse to and on the opposite sides of said opening, a nut having ears inserted in said pockets, with said opening on one side of said pockets large enough for the passage of said nut with said ears.

2. In a bench vise, the combination with a fixed plate attached to the under side of said bench and provided with longitudinal ways, a plate slidable in said ways, of a lug depending from said fixed plate and having an opening therethrough, said lug also having recesses or pockets transverse to and on opposite sides of said opening, a nut having ears inserted in said pockets, with said opening on one side of said pockets large enough for the passage of said nut with said ears, and with said slidable plate arranged to prevent the rotation of said nut.

3. In a bench vise, the combination with a fixed plate attached to the under side of the bench and provided with longitudinal ways, a plate slidable in said ways, a jaw integral with said slidable plate, of 2. lug

depending from said fixed plate and having with said slidable plate arranged to prevent the rotation of said nut.

4. In a bench vise, the combinationwith a fixed plate attached to the under side of the bench, of a lug depending from said fixed plate and having an opening therethrough, said lug also having recesses or pockets on the opposite sides of said opening, a nut having ears inserted in said pockets, with said opening arranged for the endwise removal of said nut through said opening.

5. In a bench vise, the combination with a fixed plate attached to the under side of the bench, of a rotatable screw, a lug depending from said fixed'plate having an opening therethrough, said lug also having recesses or pockets on the opposite sides of said opening, a nut engaging said screw having ears loosely held'in said pockets, with said nut capable of an automatic adjustment in said pockets to bring its axis coincident with the axis of said screw, and arranged to be removed endwise through said opening.

ALBERT L. BEMIS. \Vitnesses:

Burns B. FOWLER, PENELOPE CoMBERBAoH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

